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San Joaquin County ( ) is a county located in Central Valleymarker of the U.S. state of Californiamarker, just east of the San Francisco Bay Areamarker. As of 2006, the population was approximately 620,000.The urban population is 610,783 people. The county seat is Stocktonmarker.


San Joaquin County was one of the original counties of California, created in 1850 at the time of statehood.

The county takes its name from the San Joaquin River. In the early 1800s Lieutenant Gabriel Moraga, commanding an expedition in the lower great California Central Valleymarker, gave the name of San Joaquin (meaning Joachim) to a rivulet that springs from the Sierra Nevada and empties into Buena Vista Lake. San Joaquin County is also home to the site of the San Joaquin Valleymarker's first permanent residence.


According to the U.S. Census Bureau, the county has a total area of 1,426 square miles (3,694 km²), of which, 1,399 square miles (3,624 km²) of it is land and 27 square miles (70 km²) of it (1.89%) is water.

Cities, towns, and communities

According to the U.S. GNIS, there are 109 populated places in the county.

Incorporated cities and towns

Census-designated places

Unincorporated areas and communities

National protected area

Transportation Infrastructure

Major highways

Public transportation

San Joaquin Regional Transit District provides city bus service within Stockton. RTD also runs intercity routes throughout the county, and subscription commuter routes to Livermore, Pleasanton, Sacramento and Santa Clara County.

The cities of Lodi, Manteca, Tracy and Ripon operate their own bus systems.

Train and bus service

Greyhound buses and Amtrak trains both stop in Stockton. Amtrak's San Joaquins Oakland-Bakersfield train stops at the San Joaquin Street Stationmarker. Amtrak's San Joaquins Sacramento-Bakersfield trains stop at the Robert J.marker Cabral Stationmarker which is also used by Altamont Commuter Express trains which originate in Stockton. RTD Hopper is a public bus service connecting Ripon, Escalon, Manteca, Lathrop, Thornton, Woodbridge, Acampo, Morada, and Linden to Stockton, Tracy, and Lodi.


Stockton Metropolitan Airportmarker features passenger service to Las Vegas and Phoenix, along with cargo service and general aviation. Other general aviation airports in the county include Escalon Airport, Lodi Airport and Tracy Municipal Airportmarker.


As of the census of 2000, there were 563,598 people, 181,629 households, and 134,768 families residing in the county. The population density was 403 people per square mile (156/km²). There were 189,160 housing units at an average density of 135 per square mile (52/km²). The racial makeup of the county was 58.13% White, 6.69% Black or African American, 1.13% Native American, 11.41% Asian, 0.35% Pacific Islander, 16.26% from other races, and 6.05% from two or more races. 30.53% of the population were Hispanic or Latino of any race. 9.3% were of German, 5.3% Irish and 5.0% English ancestry according to Census 2000. 66.4% spoke English, 21.3% Spanish, 2.2% Tagalog, 1.8% Mon-Khmer or Cambodian, 1.1% Vietnamese and 1.1% Hmong as their first language.

There were 181,629 households out of which 40.5% had children under the age of 18 living with them, 54.3% were married couples living together, 14.0% had a female householder with no husband present, and 25.8% were non-families. 20.7% of all households were made up of individuals and 8.4% had someone living alone who was 65 years of age or older. The average household size was 3.00 and the average family size was 3.48.

In the county the population was spread out with 31.0% under the age of 18, 10.0% from 18 to 24, 28.8% from 25 to 44, 19.6% from 45 to 64, and 10.6% who were 65 years of age or older. The median age was 32 years. For every 100 females there were 99.9 males. For every 100 females age 18 and over, there were 97.2 males.

The median income for a household in the county was $41,282, and the median income for a family was $46,919. Males had a median income of $39,246 versus $27,507 for females. The per capita income for the county was $17,365. About 13.5% of families and 17.7% of the population were below the poverty line, including 23.7% of those under age 18 and 10.0% of those age 65 or over.


Presidential election results
Year GOP DEM Others
2008 44.2% 74,318 54.0% 90,851 1.7% 2,874
2004 53.2% 100,978 45.8% 87,012 1.0% 1,874
2000 48.9% 81,773 47.7% 79,776 3.4% 5,960
1996 44.9% 65,131 46.3% 67,253 8.8% 12,756
1992 37.8% 58,355 41.3% 63,655 20.9% 32,200
1988 54.4% 75,309 44.6% 61,699 1.0% 1,445
1984 59.6% 81,795 39.2% 53,846 1.2% 1,572
1980 55.4% 64,718 35.6% 41,551 9.1% 10,594
1976 49.6% 50,277 48.1% 48,733 2.3% 2,351
1972 55.3% 61,646 39.5% 44,062 5.2% 5,761
1968 48.0% 47,293 42.7% 42,073 9.3% 9,223
1964 38.1% 36,546 61.8% 59,210 0.1% 83
1960 52.8% 48,441 46.8% 42,855 0.4% 361

San Joaquin is a Republican-leaning county in Presidential and Congressional elections. The last Democrat to win a majority in the county before 2008 was Lyndon Johnson in 1964, although Bill Clinton won pluralities in the county in 1992 and 1996. However, in 2008, Democrat Barack Obama won 54% of the county's vote.

San Joaquin is part of California's 11th and 18th congressional districts, which are held by Democrats Jerry McNerney and Dennis Cardoza respectively. In the State Assembly San Joaquin is part of the 10th, 15th, 17th, 26th Assembly districts. The 17th is held by Democrat Cathleen Galgiani while the 10th, 15th, and 26th are held by Democrats Alyson Huber and Joan Buchanan, and Republican Bill Berryhill, respectively. In the State Senate San Joaquin is part of the 5th and 14th districts, which are held by Democrat Lois Wolk and Republican Dave Cogdill respectively. County government was recently rocked by a scandal concerning county employees editing Wikipedia entries from county/city computers.

On November 4, 2008, San Joaquin County voted 65.5 % for Proposition 8 which amended the California Constitution to ban same-sex marriages.


San Joaquin County is home to 14 public school districts and numerous private schools.

District Name Enrollment Lang Arts Performance Math Performance
Escalon Unified 3,140 49.4% 46.0%
Lincoln Unified 8,712 50.9% 51.3%
Linden Unified 2,758 44.4% 45.9%
Lodi Unified 31,266 38.0% 43.1%
Manteca Unified 23,643 42.7% 42.4%
Ripon Unified 3,014 58.3% 60.3%
Stockton Unified 38,617 29.1% 38.2%
Tracy Unified 17,375 44.3% 41.2%
  Averages for all Districts 45.5% 48.5%


San Joaquin County is home to at least two publicly traded companies: Diamond Foods (DMND) and Pacific State Bancorp (PSBC). The shares of both companies are traded on NASDAQ.

See also


  1. County Results - Election Center 2008 - Elections & Politics from
  2. A statewide average for this value is not computed by the California Department of Education.

External links

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